9/16"-12 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

9/16"-12 L9 Hex Head Cap Screw – Coarse Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

Get industrial-grade strength with our 9/16"-12 L9 Hex Head Cap Screws, engineered for applications where durability and reliability are essential. Manufactured in the USA from high-grade alloy steel, these screws deliver a tensile strength of 180,000 PSI and feature coarse threading (UNC) for quick installation and superior grip. Ideal for bulk purchases, they provide a cost-effective solution for high-stress, large-scale projects in heavy-duty industries.

Advantages of L9 Hex Head Cap Screws

Ordering L9 Hex Cap Screws in bulk is ideal for high-demand applications, ensuring quality and consistency across every fastener. Industries such as construction, manufacturing, and transportation rely on these L9 fasteners for their unbeatable strength, helping reduce downtime and maintenance costs in critical projects.

Exceptional L9 Features:

• Enhanced Head Height: Provides superior wrench engagement for secure, non-slip tightening.
• Radius Under Head: Minimizes stress points, enhancing longevity under constant load.
• Optimal Load Distribution: Smooth bearing surface for even clamp load application.

Key Mechanical Properties:

• Hardness: 38 to 42 HRC
• Surface Hardness: HR15N 81.5 Max
• Tensile Strength: 180,000 PSI Minimum
• Yield Strength: 155,000 PSI Minimum
• Proof Load Strength: 145,000 PSI
• Head Marking: Nine radial lines with "L9" marking for easy identification

Corrosion-Resistant Zinc Yellow Finish:

• Zinc Yellow Plating: Complies with ASTM F1941/F1941M Fe/Zn 5CN, offering a 5-micron minimum coating thickness for corrosion resistance.
• Yellow Trivalent (Cr+3) Coating: Protects against rust with 96 hours of salt spray life.

Technical Specifications:

• Size: 9/16"-12 (Diameter: 0.5625", Threads per Inch: 12)
• Length Options: Multiple lengths available to match project needs (select above)
• Material: High-Grade Alloy Steel (L9)
• Finish: Zinc Yellow CR+3 Plating for enhanced corrosion resistance
• Thread Type: Coarse Thread (UNC)
• Manufactured In: United States

Applications Requiring Bulk Quantities:

Our bulk 9/16"-12 L9 Hex Head Cap Screws are trusted in industries requiring robust, reliable fasteners, from automotive to infrastructure projects. With high tensile strength and corrosion resistance, they meet the demands of large-scale, high-stress applications.

Explore the Full L9 Product Line

Order Bulk L9 Fasteners Today!

Secure your project with Bulk 9/16"-12 L9 Hex Head Cap Screws. Place your bulk order today and enjoy fast shipping and industry-leading support from Monster Bolts.